Log Message:
Update uim to 1.6.0.
patch provided by YAMASHIRO, Jun via PR#44861.

pkgsrc changelog:
* remove "canna" option from default.

Overview of changes from 1.6.0 to 1.6.1
=======================================
* Fixes
  - IM management system
    * Fix crash while switching to the IM which has been once used but
      then disabled and re-enabled again by "Enabled input methods"
      widget of uim-pref.

  - uim-skk
    * Don't crash with malformed words having brackets which are not
      intended for skk-henkan-strict-okuri-precedence.

  - libuim-skk.so
    * Fix possible contamination of dictionary files of SKK-JISYO and
      tutcode's mazegaki dictionary when user switches between uim-skk
      and uim-tutcode dynamically.

* Enhancements
  - uim-tutcode
    * Interactive bushu conversion
    * Postfix bushu conversion in yomi of mazegaki.
    * Completion
    * Input prediction in mazegaki conversion
    * Input prediction in bushu conversion
    * Kanji combination guide on completion and input prediction
    * Another symbol (kigou) input mode like "KI"
    * Add function to redisplay last auto help
    * Show kanji on auto help
    * Show hint kanji for intermediate sequence on virtual keyboard

  - uim-pref
    * Add configuration 'uim-pref-suppress-dot-uim-warning-dialog?'
      (Set this variable #t in ~/.uim if you'd like to suppress the
      dialog)

  - uim.el
    * Support Emacs24 (by Kan-Ru Chen, #31539)

* Others
  - Enable compilation even when the home directory of chrooted build
    environment is non-writable (e.g. nobody user)

  - tcode, trycode, and hangul modules are no longer enabled by
    default.  Use more sophisticated tutcode and byeoru modules
    instead.